Goodwill and Other Intangible Assets (Textual) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill	$ 135,360	$ 135,709	$ 135,360	$ 6,024	$ 6,024
Impairments		0	0	0
Amortization expense for intangible assets		32,200	35,400	19,100
Expected future annual amortization expense of intangibles in 2019		30,800
Expected future annual amortization expense of intangibles in 2020		23,500
Expected future annual amortization expense of intangibles in 2021		22,300
Expected future annual amortization expense of intangibles in 2022		19,000
Expected future annual amortization expense of intangibles in 2023		$ 12,600
Minimum
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Weighted average cost of capital percentage used to determine impairment or reporting unit		8.75%
Weighted average cost of capital percentage used to determine impairment or reporting unit, risk premium		2.00%
Maximum
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Weighted average cost of capital percentage used to determine impairment or reporting unit		10.75%
Weighted average cost of capital percentage used to determine impairment or reporting unit, risk premium		4.00%
Grain Storage and Merchandising
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill		$ 80,800
Percentage of FV in excess of carrying amount		9.00%
Food and Specialty Ingredients
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill		$ 41,300
Percentage of FV in excess of carrying amount		14.00%
Ethanol
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill		$ 8,800
Percentage of FV in excess of carrying amount		6.00%
Rail Repair
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill		$ 4,200
Lawn
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill		700
Trade
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill	127,781	122,067	127,781	1,171	1,171
Goodwill, accumulated impairment loss		46,400
Impairments		0	0	0
Plant Nutrient
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Goodwill	686	686	686	686	$ 686
Goodwill, accumulated impairment loss		68,900
Impairments		$ 0	$ 0	$ 0
Frac sand and propane | Trade
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Impairment charges	$ 2,500